Protector for the threaded ends of pipes



(No Model.)

, H. E. BOYD.

Protector for the Threaded Ends of Bipes, Tubifig, 8x0.

Mm 228,? Pairawired Mme 'fl, EEQQQ.

mfllesgea HENRY E. Born, on McKnnsPoR'r, PENNSYLVANIA.

Pno'recron FUR THE THREAED ease or PEPES, TUBING, ac.

SPECIFICATION forming part of Letters Patent No. 228,171, dated June 1, 1880. Application filed March 8, 1880. (No model.)

To all whom it may concern:

Be it known that I, HENRY E. BOYD, of McKeesport, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Protectors for the Threaded Ends of Pipes, Tubing, &c.; and I do hereby declare the following to be a full,

clear, and exact description thereof.

My invention relates to an improvement in protectors for the threaded ends of all kinds of steam-pipes, casing, and tubing; and it has for its object the protection ofthe same from injury during transportation and while beingpipe from coming in contact with adjacent.

objects. This method is, at best, far from satisfactory, both by reason ofits inefiliciency, and also because the pin gs are apt to become loose and fall out of the end of the pipe.

By the use of my llll proved protector or I guard the threaded end of the pipe is com plctely protected from injury.

My invention consists in a cap, guard, or

protector composed of an inner coil of wire of a proper size-to fit into or between the threads of the pipe and to project slightly above the edges of the same, covered on the outside with a thin sheet of lead or a strip of cloth which has been dipped in asphaltum or other like substance, and over this an outer-casing of sheet-iron or light iron pipe, the several parts being evenly and compactly joined by being subjected to the action of a press.

1 will now describe my invention so that others skilled in the art may manufacture the same, reference being had to the accompanying drawings, forming a part of this specification, in which Figure l is a perspective view of my protector. Fig. 2 is a sectional view, and Fig. 3 is a detached view of the clamp for holding the ends of the outer casing of my improved protector together.

a. represents-the coil of wire, either round or angular, which forms the thread. Over this is the sheet of lead b, or other suitable substance for holding the wire in form, and over this is placed a piece of thin'pipe or sheetiron, I

0, provided with slots of, through which the lead is caused to project in the form of lugs e.

f is a longitudinal seam on the outer side of the casin g 0, formed by folding the ends thereof.

The mode of constructing my guard or protector is as follows: A piece of wire is wound between the threads of a steel mandrel. This mandrel should be of the same size as the pipe for which the guardv is intended, and should have a thread cutthereon of the same size and pitch as that of the pipe, so as to form the coil a. Around this coil is then placed a piece of sheet-lead cut to the required size to enfold the coil a. This forms the inside casing b.

The object of this is to form a casing around and bctween the wire which forms the thread a, so as to hold it in form and shape, and prevent the coil from being separated or enlarged; and instead of lead any other suitable substance, such as cloth covered with asphaltum, which will sink between the rings of the coil, so as to perform the requisite function, may be employed. flverfand around the inner casin g, b, is placed or bent a piece of thin pipe, or a piece of sheet-iron, so as to form the casing c. This iron or pipe is provided with oneor more slots, d.- The mandrel is then placed in a press and the parts are firmly compressed together. The effect of this is that the wire is firmly embeddedin the coating 11 .of lead or other suitable substance. The lead is forced through the slots d, so as to form lugs or projections 0 even with the outer surface of the iron casin g c. The ends of the outer casing, c, are folded and pressed together so as to form a secure joint or fastening, and at the same time form a longitudinal projecting seam on the outer surface of the casin g c, and the guard or protector is contracted so as to lit the pipe for which it is intended. The front end or edge of the iron casing is then bent or folded down sufficiently to protect the wire thread a.

Before the casing or guard is placed in the i press care must be taken to drawthe ends of the wire which forms the thread a between the overlapping or meeting ends of the casing a, so that they will be firmly held therein when the parts are compressed together.

IOO

a g 1 scant The object of the seam f is to, enable the protector to be screwed and unscrewed easily upon and from the pipe by means of a wrench. It may be formed by several different modes 5 of bending the casing 0. They may be folded together, or they maybe bent from each other,

"so as to form a double flange, which flanges are coupled together by a tapering slide, h, which is driven over, engages, and draws the qwtwoends-fiflnly ogether afterthe" protector has been placed upon the pipe. v

The protector should be made longer than the thread of the pipe for which iti's intended. .This is accomplished by making the outer casing, c,of a greater length than the inner coating, b, thereby completely protecting the threads of the pipe. The advantages of my protector are that it is cheap and light, yet, having suflicient strength, it eifectually protects the threaded end of the pipe. v 'Havingthus'described my invention, whatI claim, and desire to secure by Letters Patout. is-

1. A protector or guard for the threads end 2 5 I of pipes or tubing, consisting of :1 meta case having an inner coating of soft metal, cloth,

or asphaltum, and a wire coil forming'a thread' therein, so constructed as to tit closely around the end of the pipe or tubing, substantially as and for the purpose specified.

2. Aprotector for the threaded ends of pipes, provided with a slot or slots, in combination with an inner coating of soft metal or isimilar substance, substantially as and for the purposespecified- 3. A protector for the threaded ends of pipes, tubes, &c., consisting of a metal casing having a longitudinal seam and a lining of soft metal connected .to' the casing, s'ubstano tia-lly as and for the purpose specified.

In testimony whereof 1, the said HENRY E.

BOYD, have hereunto set my hand.

HENRY' E. BOYD.

'Witnesses:

FRANK W. .nurrn, Joan K. SMITH. 

